23 Mar, 2006
40 commits
-
Attempt to fix the problem wherein people's oops reports scroll off the screen
due to repeated oopsing or to oopses on other CPUs.If this happens the user can reboot with the `pause_on_oops=' option.
It will allow the first oopsing CPU to print an oops record just a single
time. Second oopsing attempts, or oopses on other CPUs will cause those CPUs
to enter a tight loop until the specified number of seconds have elapsed.The patch implements the infrastructure generically in the expectation that
architectures other than x86 will find it useful.Cc: Dave Jones
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch removes all occurances of _INLINE_ in the kernel.
With the exception of tty_flip.h, I've simply removed the inline's since
gcc should know best which functions to be inlined.Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Consolidate all kernel bug printouts to begin with the "BUG: " string.
Makes it easier to find them in large bootup logs.Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Semaphore to mutex conversion.
The conversion was generated via scripts, and the result was validated
automatically via a script as well.Signed-off-by: Ingo Molnar
Acked-by: Anil S Keshavamurthy
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use the standard BCD macros instead of redefining them.
Signed-off-by: Jean Delvare
Cc: Geert Uytterhoeven
Cc: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch from Pavel moves userland freeze signals handling into more logical
place. It now hits even with mysqld running.Signed-off-by: Rafael J. Wysocki
Signed-off-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Don't create "online" control file for BSP (i386/x86_64) since its
not removable.We originally added this to support ppc64 if the kernel has support but
BIOS indicated no offline support, we just didnt create online files for
them.We used the same method in ia64 as well, if we have a cpu taking platform
interrupts but cannot be removed if those interrupts cannot be re-targeted
to another cpu.Signed-off-by: Ashok Raj
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
You must always ensure to fulfill the dependencies of what you are
select'ing.Signed-off-by: Adrian Bunk
Cc: Martin Bligh
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Checking APIC version instead of CPU family to determine XAPIC. Family 6
CPU could have xapic as well.Signed-off-by: Shaohua Li
Cc: Dave Jones
Cc: "Seth, Rohit"
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Detecting cache line using cpuid.4, cpuid level 4 is enough.
Signed-off-by: Shaohua Li
Cc: Dave Jones
Cc: "Seth, Rohit"
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
i386 has a small bug in the stack dump code where it prints an extra log
level code. Remove that and fix the alignment of normal stack dump
printout. Also remove some unnecessary printk() calls.Signed-off-by: Chuck Ebbert
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
With cpu_gdt_descr having been converted to per-CPU data, the old object
(in head.S) no longer needs to reserve space for each CPU's instance. With
cpu_gdt_table not being used for CPU 0 anymore, it doesn't seem to need
page alignment (or if in fact there is a need for it to retain that
alignment, the whole object should go into .data.page_align).Signed-off-by: Jan Beulich
Acked-by: Zachary Amsden
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
arch/i386/kernel/cpu/centaur.c: In function `centaur_mcr_insert':
arch/i386/kernel/cpu/centaur.c:33: warning: implicit declaration of function `mtrr_centaur_report_mcr'Signed-off-by: Jesper Juhl
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
arch/i386/kernel/apic.c:840: warning: implicit declaration of function `GET_APIC_ID'
Signed-off-by: Jesper Juhl
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Document a limitation of vsyscall-sysenter, since patches to fix it have
been rejected.Signed-off-by: Chuck Ebbert
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Using PTRACE_SINGLESTEP on a child that does an int80 syscall misses the
SIGTRAP that should be delivered upon syscall exit. Fix that by setting
TIF_SINGLESTEP when entering the kernel via int80 with TF set./* Test whether singlestep through an int80 syscall works.
*/
#define _GNU_SOURCE
#include
#include
#include
#include
#include
#include
#includestatic int child, status;
static struct user_regs_struct regs;static void do_child()
{
ptrace(PTRACE_TRACEME, 0, 0, 0);
kill(getpid(), SIGUSR1);
asm ("int $0x80" : : "a" (20)); /* getpid */
}static void do_parent()
{
unsigned long eip, expected = 0;
again:
waitpid(child, &status, 0);
if (WIFEXITED(status) || WIFSIGNALED(status))
return;if (WIFSTOPPED(status)) {
ptrace(PTRACE_GETREGS, child, 0, ®s);
eip = regs.eip;
if (expected)
fprintf(stderr, "child stop @ %08x, expected %08x %s\n",
eip, expected,
eip == expected ? "" : "
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
>commit 76381fee7e8feb4c22be636aa5d4765dbe4fbf9e
>Author: Vincent Hanquez
>Date: Thu Jun 23 00:08:46 2005 -0700
>
> [PATCH] xen: x86_64: use more usermode macro
>
> Make use of the user_mode macro where it's possible. This is useful for Xen
> because it will need only to redefine only the macro to a hypervisor call.I am of the opinion that the above changeset is incomplete, i.e. it missed
converting some previous uses of user_mode to user_mode_vm. While most of
them could be considered just cosmetical, at least the one in die_nmi
doesn't appear to be.Signed-off-by: Jan Beulich
Cc: Vincent Hanquez
Cc: Zachary Amsden
Cc: James Bottomley
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Registering a callback handler through register_die_notifier() is obviously
primarily intended for use by modules. However, the way these currently
get called it is basically impossible for them to actually be used by
modules, as there is, on non-PAE configurationes, a good chance (the larger
the module, the better) for the system to crash as a result.This is because the callback gets invoked
(a) in the page fault path before the top level page table propagation
gets carried out (hence a fault to propagate the top level page table
entry/entries mapping to module's code/data would nest infinitly) and(b) in the NMI path, where nested faults must absolutely not happen,
since otherwise the IRET from the nested fault re-enables NMIs,
potentially resulting in nested NMI occurences.Besides the modular aspect, similar problems would even arise for in-
kernel consumers of the API if they touched ioremap()ed or vmalloc()ed
memory inside their handlers.Signed-off-by: Jan Beulich
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Expand out these fairly pointless macros.
Cc: Chuck Ebbert
Cc: Stas Sergeev
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use boot info to start early_printk() at the current row on VGA console, as
left by the boot loader.Signed-off-by: Chuck Ebbert
Cc: Stas Sergeev
Cc: Andi Kleen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The history is that -mm kernels do not work for me for a few months
already. The things started from crashing somewhere after starting init,
and for the last month - no boot at all, just "Uncompressing... OK,
booting kernel", and silence. Early console didn't work too. With the
latest releases this degraded into an infinite stream of the "Unknown
interrupt or fault" messages. So today my patience ran out and I started
to think how can I collect at least some info for the bug-report. Attached
is the patch that allows to gather some valueable debug info on the problem
by making an early console more useable. I can't properly test the patch,
as the kernel still doesn't boot, so I'll explain it in details in a hope
someone else can justify the intrusive changes.arch_hooks.h: added prototypes for setup_early_printk() and early_printk().
setup.c: killed wrong setup_early_printk() prototype. Moved
setup_early_printk() a bit earlier, as it was not "early enough" to cover
the bug I was fighting with.early_printk.c: made it to start printing from the bottom of the screen,
otherwise the messages interfere with the ones of the boot-loader, so you
can't read them.Signed-off-by: Stas Sergeev
Cc: Andi Kleen
Cc: Zwane Mwaikambo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Allow signal handlers to set the RF bit in EFLAGS. This lets a simple
debugger using SIGTRAP skip one instruction after returning from a signal.Signed-off-by: Chuck Ebbert
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There's no good reason for allowing ptrace to set the NT bit in EFLAGS, so
mask it off.Signed-off-by: Chuck Ebbert
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Merge a few printk calls in i386 traps.
Signed-off-by: Jean Delvare
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
ES7000 platform code clean up for compilation errors and a warning.
Ifdef'd the ACPI related parts in the ES7000 platform code. They were
causing compile errors in certain configuration (without ACPI defined). I
think this approach would be best (as opposed to Kconfig changes) since it
only touches the subarch...Signed-off-by:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When vendor-specific i386 initialization code is unavailable the kernel
falls back to a default CPU model name. Make that model name reflect the
CPU family instead of an internal vendor index.Tested on Pentium II (family 6 model 5).
/proc/cpuinfo before:
model name : ff/05after:
model name : 06/05Signed-off-by: Chuck Ebbert
Acked-by: "Seth, Rohit"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Allow the x86 "sep" feature to be disabled at bootup. This forces use of the
int80 vsyscall. Mainly for testing or benchmarking the int80 vsyscall code.Signed-off-by: Chuck Ebbert
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Several places in arch/i386/kernel/cpu and kernel/cpu were using __devinit
when they should have been __cpuinit. Fixing that saves ~4K when
CONFIG_HOTPLUG && !CONFIG_HOTPLUG_CPU.Noticed by Andrew Morton.
Signed-off-by: Chuck Ebbert
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Implement SMP alternatives, i.e. switching at runtime between different
code versions for UP and SMP. The code can patch both SMP->UP and UP->SMP.
The UP->SMP case is useful for CPU hotplug.With CONFIG_CPU_HOTPLUG enabled the code switches to UP at boot time and
when the number of CPUs goes down to 1, and switches to SMP when the number
of CPUs goes up to 2.Without CONFIG_CPU_HOTPLUG or on non-SMP-capable systems the code is
patched once at boot time (if needed) and the tables are released
afterwards.The changes in detail:
* The current alternatives bits are moved to a separate file,
the SMP alternatives code is added there.* The patch adds some new elf sections to the kernel:
.smp_altinstructions
like .altinstructions, also contains a list
of alt_instr structs.
.smp_altinstr_replacement
like .altinstr_replacement, but also has some space to
save original instruction before replaving it.
.smp_locks
list of pointers to lock prefixes which can be nop'ed
out on UP.
The first two are used to replace more complex instruction
sequences such as spinlocks and semaphores. It would be possible
to deal with the lock prefixes with that as well, but by handling
them as special case the table sizes become much smaller.* The sections are page-aligned and padded up to page size, so they
can be free if they are not needed.* Splitted the code to release init pages to a separate function and
use it to release the elf sections if they are unused.Signed-off-by: Gerd Hoffmann
Signed-off-by: Chuck Ebbert
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Print stack backtraces in multiple columns, saving screen space. Number of
columns is configurable and defaults to one so behavior is
backwards-compatible.Also removes the brackets around addresses when printing more
that one entry per line so they print as:
instead of:
[]
This helps multiple entries fit better on one line.Original idea by Dave Jones, taken from x86_64.
Signed-off-by: Chuck Ebbert
Signed-off-by: Dave Jones
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make CONFIG_REGPARM enabled by default. It's a noticable win both for size
and for performance, and gcc[34] handles it correctly.Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
REGPARM has already gotten much testing, what about removing the
dependency on EXPERIMENTAL?Additionally, this patch does:
- remove the useless "default n"
- remove note regarding binary only modules (nowadays, there are even
some binary only modules compiled with REGPARM=y available)Signed-off-by: Adrian Bunk
Cc: Sam Ravnborg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Merge clash will have broken sparc64. Synch up its online_page
implementation with powerpc, which was identical until the
set_page_count removal.Signed-off-by: Nick Piggin
Signed-off-by: Linus Torvalds -
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (78 commits)
[PATCH] powerpc: Add FSL SEC node to documentation
[PATCH] macintosh: tidy-up driver_register() return values
[PATCH] powerpc: tidy-up of_register_driver()/driver_register() return values
[PATCH] powerpc: via-pmu warning fix
[PATCH] macintosh: cleanup the use of i2c headers
[PATCH] powerpc: dont allow old RTC to be selected
[PATCH] powerpc: make powerbook_sleep_grackle static
[PATCH] powerpc: Fix warning in add_memory
[PATCH] powerpc: update mailing list addresses
[PATCH] powerpc: Remove calculation of io hole
[PATCH] powerpc: iseries: Add bootargs to /chosen
[PATCH] powerpc: iseries: Add /system-id, /model and /compatible
[PATCH] powerpc: Add strne2a() to convert a string from EBCDIC to ASCII
[PATCH] powerpc: iseries: Make more stuff static in platforms/iseries/mf.c
[PATCH] powerpc: iseries: Remove pointless iSeries_(restart|power_off|halt)
[PATCH] powerpc: iseries: mf related cleanups
[PATCH] powerpc: Replace platform_is_lpar() with a firmware feature
[PATCH] powerpc: trivial: Cleanup whitespace in cputable.h
[PATCH] powerpc: Remove unused iommu_off logic from pSeries_init_early()
[PATCH] powerpc: Unconfuse htab_bolt_mapping() callers
... -
Remove the assumption that driver_register() returns the number of devices
bound to the driver. In fact, it returns zero for success or a negative
error value.Nobody uses the return value of of_register_driver() anyway.
Signed-off-by: Bjorn Helgaas
Acked-by: Benjamin Herrenschmidt
Signed-off-by: Andrew Morton
Signed-off-by: Paul Mackerras -
arch/powerpc/mm/mem.c: In function `add_memory':
arch/powerpc/mm/mem.c:128: warning: assignment makes integer from pointer without a castCc: Benjamin Herrenschmidt
Signed-off-by: Andrew Morton
Signed-off-by: Paul Mackerras -
* master.kernel.org:/home/rmk/linux-2.6-arm: (45 commits)
[ARM] 3389/1: typo and grammar fix
[ARM] 3386/1: AT91RM9200 Clock update
[ARM] 3384/1: AT91RM9200: Timer
[ARM] 3382/1: ixp2000: unify defconfigs
[ARM] 3381/1: ixp2000: fix slowport write timing control register fields
[ARM] 3380/1: ixp2000: simplify ixdp2x00_master_npu() check
[ARM] 3379/1: ixp2000: use generic 8250 debug macros
[ARM] 3378/1: ixp2000: fix gpio interrupt handling
[ARM] Quieten spurious IRQ detection
[ARM] Use kcalloc to allocate counter_config array rather than kmalloc
[ARM] Oprofile: dynamically allocate counter_config
[ARM] Oprofile: Convert semaphore to mutex
[ARM] 3376/2: S3C2410 - update defconfig
[ARM] 3375/1: S3C2440 - fix osiris machine build
[ARM] 3374/1: ep93xx: gpio interrupt support
[ARM] 3361/1: S3C24XX - add USB bus clock source
[ARM] 3360/1: S3C2440 - add set rate methods and camera clock
[ARM] 3359/1: S3C24XX - add support for clk_set_rate
[ARM] Convert kmalloc+memset to kzalloc
[ARM] 3373/1: move uengine loader to arch/arm/common
... -
Patch from Erik Hovland
I found a typo and what seems to be a run-on sentence in
arch/arm/common/dmabounce.cThis patch corrects both.
Signed-off-by: Erik Hovland
Signed-off-by: Russell King -
Patch from Andrew Victor
This patch includes a few changes to the clock support on the
AT91RM9200.1. Added definitions for Ethernet, MMC, TWI, USARTs, and SPI peripheral
clocks.2. Replaced some hard-coded hex values with the text definitions in
at91rm9200_sys.h.3. If the USB96M bit is set for PLLB, then the rate of PLLB is not
affected but only the USB Host/Device clocks which are derived from it.
Issue reported by Sergei Sharonov.Signed-off-by: Andrew Victor
Signed-off-by: Russell King -
Patch from Andrew Victor
If the timer interrupt is ever significantly delayed (or after the
system was suspended), the system could spin incrementing the time for
too long.
The fix is to replace the "do {} while" with a "while {}".Orignal patch by Savin Zlobec and Peter Menzebach.
Signed-off-by: Andrew Victor
Signed-off-by: Russell King
